{{define "head"}}
    <style>
        .hello{ color: red;}
        hr{ border: 1px #ccc dashed;}
    </style>
{{end}}


{{define "content"}}
    <h1 class="hello">This is content!!!!</h1>
    <p>123 + 333 = {{call $.add 123 333}}</p>
    <hr>
    <p><a href="/page">Page render</a></p>
{{end}}